本次項目我開始使用IDEA這個軟件來編寫的。ps:強烈推薦java入門後使用的一款軟件，Very Nice!!!
項目名：miaosha (秒殺系統）簡單練手版本！
主要代碼：
App.java 在這裏我主要寫的是測試代碼
package com.miaoshaproject;
import com.miaoshaproject.dao.UserDOMapper;
import com.miaoshaproject.dataobject.UserDO;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
/**
* Hello world!
*
*/
@SpringBootApplication(scanBasePackages = {"com.miaoshaproject"})
@RestController
@MapperScan("com.miaoshaproject.dao")
public class App
{
@Autowired
private UserDOMapper userDOMapper;
@RequestMapping("/")
public String home(){
UserDO userDO= userDOMapper.selectByPrimaryKey(1);
if (userDO==null){
return "用戶不存在！！！";
}else {
return userDO.getName();
}
}
public static void main( String[] args )
{
System.out.println( "Hello World! 你好呀！" );
SpringApplication.run(App.class,args);
}
}
Spring註解的寫法要牢牢掌握，多寫代碼，多做幾遍業務功能。強迫自己去理解記憶。
Spring-Boot是Pivotal團隊提供的全新框架，它的設計目的是用來簡化新Spring應用的初始搭建以及開發過程。該框架使用了特定的方式來進行配置，從而使開發人員不再需要定義樣板化的配置。
換言之，spring boot並不是什麼新的框架，它只是包含了很多配置框架的使用方式
就像maven整合了所有的jar包一樣，spring boot整合了所有的框架 ps：小生愚見。
因此，使用這個框架的首要認識就是簡單！！！配置簡單，理解簡單，搭建項目VERY NICE!
具體如何在一個maven項目裏面配置spring-boot以及整合mybatis以及spring-mvc呢？ 往下看嘞您
pom.xml：
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.miaoshaproject</groupId>
<artifactId>miaosha</artifactId>
<version>1.0-SNAPSHOT</version>
<name>miaosha</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.5.RELEASE</version>
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
</properties>
<!--寫入spring-boot-->
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!--寫入mysql的連接-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.41</version>
</dependency>
<!--寫入阿里巴巴的druid連接池-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.3</version>
</dependency>
<!--Spring Boot-mybatis-->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.1</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
<plugins>
<!-- clean lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#clean_Lifecycle -->
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>3.1.0</version>
</plugin>
<!-- default lifecycle, jar packaging: see https://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_jar_packaging -->
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.22.1</version>
</plugin>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.2</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.2</version>
</plugin>
<!-- site lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#site_Lifecycle -->
<plugin>
<artifactId>maven-site-plugin</artifactId>
<version>3.7.1</version>
</plugin>
<plugin>
<artifactId>maven-project-info-reports-plugin</artifactId>
<version>3.0.0</version>
</plugin>
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.5</version>
<dependencies>
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.5</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.41</version>
</dependency>
</dependencies>
<executions>
<execution>
<id>mybatis generator</id>
<phase>package</phase>
<goals>
<goal>generate</goal>
</goals>
</execution>
</executions>
<!--考慮到實際情況中會反覆出現文件的情況 進行配置-->
<configuration>
<!--允許移動生成的文件-->
<verbose>true</verbose>
<!--允許自動覆蓋文件 這裏爲了演示-->
<overwrite>true</overwrite>
<configurationFile>
src/main/resources/mybatis-generator.xml
</configurationFile>
</configuration>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>